PA have you ever tried infrared cameras or picking up EVP with a voice recorder before? You can get some creepy butter sometimes. I used to temp at a morgue for a while and man I scared the butter out of myself daily lol.
With my photography, I can't use digital .. having negatives are necessary for validation, plus a fast shutter speed.
Ghosts are quick suckers .. that's the secret to capturing them on film. I haven't studied photography, so it was a self-taught course over the years. Eventually, I figured out that because ghosts move faster than our eyes can percieve (they are what you see moving out of the corners of your eyes) .. the best way to capture them is by freezing the movement with shutter speed. Most people use automated cameras (which I erroneously did for years), and thus .. a ghost won't likely be filmed because people and objects are slow or still .. the camera adjusts automatically.
I have a 35mm with an adjustable shutter and aperture .. however, like I said, the only thing I know about that is what I've figured out by trial and error, so I'm not sure what those functions are suppose to do, I only know that if I open the length of time and area of light ... I can get ghosts.